Handle and inlet-controlling-valve construction for pneumatic tools.



B/ANCIS TMERSON, F ATHENS, PENNSYLVANIA, ASSIG'NGR IG INGERSOLLRAND CQVIIEANY, 0F JERSEY CITY, NEW' JERSEY, A CORPORATION 0F NEW JERSEY.

HLNDLE .AND INLET-CONTRLLNG-VALVE CQNSTEUCTEDN FOR PNEUMATIG TLS.

wwmmsm Speccation of Letters latent.

Puten'tcd Nor. lo', lill 5.

.Application filed March 20, 1915, Serial lo. 15,861.

17 'i all whom t may concern:

Be it known that l, FRANCIS A. Jmizusou, a. citizen of the United States, residing at Athens,I in the county of Bradford and State of Pennsylvanie, have invented a certain new and useful improvement in Handle and Inlet-ControllingValve 'Construction for Pneumatic Tools, of which the `following is n specification.

This invention relates to the handle con struction yof pneumatic tools, and more particularly to tools having n handle which opcrates a valve for the purpose of controlling the edmissionof fluid to the cylinder.

The object of this invention is to provide s siniple and durable handle construction for tools of this type. Nith this object in view a handle and valve construction his been devised, :i` practical embodiment of which 1s represented in the accompanying drawings,

in which-- Figure l shows a, longitudinal section through the rearward part of such s. tool with the handle end Valve in operating position. Fig.' 2 shows e similar section taken at right angles 'to the section shown in Fig. l, showing the handle end `valige in non-op ereting position, Fig. 3 shows n side elerhtion of the rearward part of the tool7 Fig. shows a transverse section on the line f-l of Fig. l, and lifg. 5 shnfs u rear end elevation ot the tool.

ln the drawings is shown only the rezar end of the pneumatic tool, the cylinder and piston construction being of any desired type, such 'as ,tor instance is shown in the patent to Clement, #928,18Ldated July 13th, 1905). The tool es shown comprises a cylinder Luit the reni' end of which is a hach head :liso or' cylindrical contour. Floating in :i slot in the rezar ihr-e of the hach heed Q is :i 'transverse yoke han' 3. the ends which project transversely beyond the hoch head E2. To secure the cylinder l. bach head :2 und yoke har 3 in rigid rfstion to each other holte il i are provided. which pass through lugs on the rear ei l ci the cyliur` der and through the projecting' ends of the yoke her these bolts l lit-ting in. longitudinal depressions in the .sides of the hack heed 'Slut h are provided on the reni' ends of holt -ly ineens olf which the cylinder l. hoch heed Q and yoke bei il can he tiglitly secured together. liduloly mounted on 'the haelt hond 9. is e handle T which comprises a rearward gripping portion 8 and s sleeve portion 9, which lit-s the outer surface of the back heed 2 und can more longitudinally thereon. .ln opposite sides of the rear pore tion of sleeve 9 are slots 10 into which prf ject, the ends of the yoke bar 3, the contact orn the side faces ci these slots with the edges of 'the yoke har 3 serving to partly guide the movement of the handle on the backhead 2 in e. straight line, While the contact of the forward faces of these slots with the forward faces of the ends of the yoke loin' 3 limits the rearward movement of the' handle. The sleeve (portionof the handle is also guided longitudinally on the back head 2 hy longitudinal depressions Which'it the outer surfaces of bolts 4. Through another slot l1 in the sleeve 9 passes the inlet 'hosecoir necting nipple l2 of the tool, this nipple being threaded into the sideof the hack head 2. .From the inner end of the hose nipple l2 a. passage 13 leads to a port 14s in the side of e valve sleeve l5 set centrallyin the hack head 2, w'vhile from the side of the 'valve sleeve l5 directly opposite 'the port 13 e porn 16 connectswith e passage l? which supplies fluid to the cylinder l for the operation of the tool. Sliding in the valve y sleeve l5 is e controlling;` 'valve ld. This mii/e123 is 'cylindrical in shape and is provided with a depression i9 which when the handle und vulve are in the position shown in Fig. l permits the iossege of fluid from the inlet nipple l2 to the passage l?, so that the tool on operate, While when the handle endvalve are in positionl as shown in Fig. 2 no lluid can pass to the passage 17 and the ac tion of the tool is stopped. The forwand end of the volte sleeve l5 closed and to the inside of this portion oi the vulve sleeve n o5 smell air port 2O lends from the inlet nipple l2 which admits pressure constantly against the forward end of vulve 18, nuiintaining the heck end of valve lll always in contact .with handle l', 4and keeping vulve und handle in 1GO closed position shown in Fig. 2, except when pressure is applied hy the operntors hand to the handle grip 8. A butler 2l, of leather or other suitable material, is provided on the upper end of the heck head Q to cushion the M5 Contact between the handle and the foucl head.

and i above descriptiu.

, ent showing and,'description'discloses only the operators hand is not exerted on the handle, iluid pressure` acting through port 2O against the Ii'orward surface of the valve 18 will force the valve to a closed position, lifting the handle v vith it tothe ,position shown in Fig. 2, thus automatically shutting oil' the flow of iuid from passage 17 and stopping theoperation of the tool vexceptv when the handle is purposely pressed forward. When it is desired to 'put the tool 1n operation, the handle and consequently the.

- valvell are pushed down to their foremost position, allowing air to` pass by the de- A pressed. portion of the valve 18 and into the passage 17. When the 'tool is not in use the pressure of air acting through port 20 will maintain the valve 18 and the handle in closed position until the liow of air from the supply is closed olf.

llt is to be understood that While the presone specied modification of the invention, other forms and niodiications are included in the spirit and scope of the same, as eX- pressed in the appended claims. What I claim is:

1. In a handle construction for pneumatic tools, a cylinder, a hack head, bolts securing said hackdiead to said cylinder,l a handle comprising a sleeve portion slidably mounted on the outside of said back head, means 'for limiting," the movement of said handle on said back head, and a valve for control ling the flow of liuid to saidcyhnder moving with said handle.

2. In a handle construction yfor pneumatic tools, a cylinder, a cylindrical back head on the rear end of said cylinder, a yoke bar across therear end of said back head, bolts passing through the ends of said yoke bar and securing said cylinder backhead and' yoke bar together, a handle having a sleeve portion slidably mounted on said back head,

said sleeve, portion having guiding slots into which the ends of said yoke har project, a

passage in said hack head `for admitting Huid to said cylinder and a valve for controlling said passage movingwith said handle.

3. In a handle construction for neumatic tools, a cylinder, a back head terefor, a yoke bar across the rear endvof said back head, bolts passing through said yoke har and' securing said cylinder, back head and yoke har rigidly together, a handle having a sleeve portion slidably mounted on said back head, means for guiding and limiting the movemento'f said handle, a passage in said back head for admitting fluid to said f cylinder, and a valve for controlling said passage movin with said handle.

4. In a hand e construction for pneumatic y tools, a cylinder, a hack head, bolts securing saidback head tok said cylinder, a handle comprising a sleeve portion slidably mounted on 'the outside ofsaid back head, means forli`miting-the movement of said handle on said back head, a valve for controlling the flow of iuid to said cylinder, said valve beingl separate from said handle, and means .for

`moving said valve with-said handle.

5. ln a handle construction for pneumatic -tools, a cylinder, a hack head therefor, a

yoke bar across the rear end of said back "'FRANClS A. J'IMERSON. n

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